the.com/airspeed
how fast you move through the air, which the ground may rudely disagree with
ground vs airA jet can fly backward over ground in fierce headwinds
swallow queryMonty Python's joke birthed a real unladen-swallow estimate: 11 m/s
thin air liesInstruments read low at altitude; true speed is much higher
stall pointToo slow and wings simply quit lifting
never exceedPilots track a red-lined speed where planes break apart